here is a copy of the direction from map-point. the first bit is just getting out of calais but the road from the eurotunnel is sign posted for the A16 anyway.
Time Mile Instruction For Toward
Summary: 191.7 miles (2 hours, 47 minutes)
09:00 0.0 Depart Calais on Local road(s) (South-West) 87 yds
09:00 0.1 Turn RIGHT (South-East) onto Boulevard Jacquard 0.4 mi
09:00 0.4 Road name changes to Boulevard Pasteur 0.1 mi
09:01 0.6 Road name changes to Rue des Fontinettes 0.4 mi
09:02 1.0 Keep STRAIGHT onto Square des Fontinettes 109 yds
09:02 1.0 Keep STRAIGHT onto Rue du Cheval Gris 0.2 mi
09:02 1.2 At roundabout, take the SECOND exit onto D245 [Rue du Cheval Gris] 0.3 mi
09:03 1.5 At roundabout, take the FIRST exit onto D245 [Rue Chevreul] 0.1 mi
09:03 1.7 Take Ramp (LEFT) onto A16 [E402] 1.8 mi Calais-Port / Car Ferry / Dunkerque
09:04 3.5 Take Ramp (RIGHT) onto A26 [E15] 11.1 mi A26 / E15 / St Omer / Lens / Arras / Lille Par Lens / Reims-Paris
09:14 14.6 *Toll road* At Exit 2, stay on A26 [E15] (South-East) 54.0 mi
09:57 68.6 Keep RIGHT onto Ramp 0.4 mi A1 / E15 / E17 / Arras-Est / Lille / Paris
09:57 69.0 Keep RIGHT to stay on Ramp 0.5 mi A1 / E15 / Arras-Est / Paris
09:58 69.5 *Toll road* Merge onto A1 [E15] 87.0 mi
11:08 156.5 Stay on A1 [Autoroute du Nord] (South) 1.6 mi
11:09 158.1 *Toll road* At Exit 7, stay on A1 [E15] (South) 7.4 mi
11:15 165.5 Keep RIGHT onto Ramp 1.0 mi A3 / E15 / A104 / Bobigny / Garonor / Marne la Vallée / Sarcelles / Paris-Est
11:16 166.5 Keep RIGHT to stay on Ramp 0.2 mi A104 / Sarcelles / Marne la Vallée / Lyon / Z.I.Paris-Nord II / Parc des Expositions
11:17 166.7 Take Ramp (LEFT) onto A104 [Boulevard du Parisis] 14.7 mi A104 / E15 / Marne la Vallée / Lyon / Z.I. Paris-Nord II / Parc des Expositions
11:29 181.4 Keep RIGHT onto Ramp 0.4 mi N34 / Marne la Vallée-Val de Lagny / Lagny S/Marne / Coulommiers
11:29 181.8 Road name changes to N34 5.3 mi
11:39 187.1 Turn RIGHT (South) onto Local road(s) 0.1 mi
11:39 187.2 Enter roundabout 98 yds
11:39 187.2 At roundabout, take the FIRST exit onto D344 [Boulevard de l'europe] 1.1 mi
11:41 188.3 At roundabout, take the SECOND exit onto D344 [Boulevard de Europe] 1.0 mi
11:43 189.3 Road name changes to D344 C [Boulevard de Europe] 0.5 mi
11:44 189.9 Take Ramp (LEFT) onto Avenue Paul Seramy 0.5 mi
11:45 190.4 Keep STRAIGHT onto Boulevard du Parc 1.3 mi Parc
Disneyland
11:47 191.7 Arrive Disneyland Resort Paris
SUMMARY
Driving distance: 191.7 miles
Trip duration: 2 hours, 47 minutes
Driving time: 2 hours, 47 minutes
Cost: £31.76
the cost is based on 29 miles to gallon and £1.07p per ltr of diesel. it will also cost about €20 for the toll each way